Portion of a bottle



FIG. 1 is a top, front, and right side perspective view of a new design for a portion of a bottle;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a front elevational view thereof.

The dash lines shown in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a portion of a bottle, as shown and described. 